QBANK Blood-based and urine-based pregnancy tests both quantitatively measure the glycoprotein hormone human chorionic gonadotropin (hCG). A diagram of a 5-

[DianaZ]

Blood-based and urine-based pregnancy tests both quantitatively measure the glycoprotein hormone human chorionic gonadotropin (hCG). A diagram of a 5-day-old blastocyst within the uterus is shown. Which of the lettered structures later produces hCG, resulting in a positive pregnancy test?

A. Structure A
B. Structure B
C. Structure C
D. Structure D
E. Structure E